app/test-eventdev/test_perf_atq.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) Cavium, Inc 2017.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Cavium, Inc nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include "test_perf_common.h"
  34
  35 /* See http://dpdk.org/doc/guides/tools/testeventdev.html for test details */
  36
  37 static inline int
  38 atq_nb_event_queues(struct evt_options *opt)
  39 {
  40         /* nb_queues = number of producers */
  41         return evt_nr_active_lcores(opt->plcores);
  42 }
  43
  44 static inline __attribute__((always_inline)) void
  45 atq_mark_fwd_latency(struct rte_event *const ev)
  46 {
  47         if (unlikely(ev->sub_event_type == 0)) {
  48                 struct perf_elt *const m = ev->event_ptr;
  49
  50                 m->timestamp = rte_get_timer_cycles();
  51         }
  52 }
  53
  54 static inline __attribute__((always_inline)) void
  55 atq_fwd_event(struct rte_event *const ev, uint8_t *const sched_type_list,
  56                 const uint8_t nb_stages)
  57 {
  58         ev->sub_event_type++;
  59         ev->sched_type = sched_type_list[ev->sub_event_type % nb_stages];
  60         ev->op = RTE_EVENT_OP_FORWARD;
  61         ev->event_type = RTE_EVENT_TYPE_CPU;
  62 }
  63
  64 static int
  65 perf_atq_worker(void *arg, const int enable_fwd_latency)
  66 {
  67         PERF_WORKER_INIT;
  68         struct rte_event ev;
  69
  70         while (t->done == false) {
  71                 uint16_t event = rte_event_dequeue_burst(dev, port, &ev, 1, 0);
  72
  73                 if (enable_fwd_latency)
  74                         rte_prefetch0(ev.event_ptr);
  75
  76                 if (!event) {
  77                         rte_pause();
  78                         continue;
  79                 }
  80
  81                 if (enable_fwd_latency)
  82                 /* first stage in pipeline, mark ts to compute fwd latency */
  83                         atq_mark_fwd_latency(&ev);
  84
  85                 /* last stage in pipeline */
  86                 if (unlikely((ev.sub_event_type % nb_stages) == laststage)) {
  87                         if (enable_fwd_latency)
  88                                 cnt = perf_process_last_stage_latency(pool,
  89                                         &ev, w, bufs, sz, cnt);
  90                         else
  91                                 cnt = perf_process_last_stage(pool, &ev, w,
  92                                          bufs, sz, cnt);
  93                 } else {
  94                         atq_fwd_event(&ev, sched_type_list, nb_stages);
  95                         while (rte_event_enqueue_burst(dev, port, &ev, 1) != 1)
  96                                 rte_pause();
  97                 }
  98         }
  99         return 0;
 100 }
 101
 102 static int
 103 perf_atq_worker_burst(void *arg, const int enable_fwd_latency)
 104 {
 105         PERF_WORKER_INIT;
 106         uint16_t i;
 107         /* +1 to avoid prefetch out of array check */
 108         struct rte_event ev[BURST_SIZE + 1];
 109
 110         while (t->done == false) {
 111                 uint16_t const nb_rx = rte_event_dequeue_burst(dev, port, ev,
 112                                 BURST_SIZE, 0);
 113
 114                 if (!nb_rx) {
 115                         rte_pause();
 116                         continue;
 117                 }
 118
 119                 for (i = 0; i < nb_rx; i++) {
 120                         if (enable_fwd_latency) {
 121                                 rte_prefetch0(ev[i+1].event_ptr);
 122                                 /* first stage in pipeline.
 123                                  * mark time stamp to compute fwd latency
 124                                  */
 125                                 atq_mark_fwd_latency(&ev[i]);
 126                         }
 127                         /* last stage in pipeline */
 128                         if (unlikely((ev[i].sub_event_type % nb_stages)
 129                                                 == laststage)) {
 130                                 if (enable_fwd_latency)
 131                                         cnt = perf_process_last_stage_latency(
 132                                                 pool, &ev[i], w, bufs, sz, cnt);
 133                                 else
 134                                         cnt = perf_process_last_stage(pool,
 135                                                 &ev[i], w, bufs, sz, cnt);
 136
 137                                 ev[i].op = RTE_EVENT_OP_RELEASE;
 138                         } else {
 139                                 atq_fwd_event(&ev[i], sched_type_list,
 140                                                 nb_stages);
 141                         }
 142                 }
 143
 144                 uint16_t enq;
 145
 146                 enq = rte_event_enqueue_burst(dev, port, ev, nb_rx);
 147                 while (enq < nb_rx) {
 148                         enq += rte_event_enqueue_burst(dev, port,
 149                                                         ev + enq, nb_rx - enq);
 150                 }
 151         }
 152         return 0;
 153 }
 154
 155 static int
 156 worker_wrapper(void *arg)
 157 {
 158         struct worker_data *w  = arg;
 159         struct evt_options *opt = w->t->opt;
 160
 161         const bool burst = evt_has_burst_mode(w->dev_id);
 162         const int fwd_latency = opt->fwd_latency;
 163
 164         /* allow compiler to optimize */
 165         if (!burst && !fwd_latency)
 166                 return perf_atq_worker(arg, 0);
 167         else if (!burst && fwd_latency)
 168                 return perf_atq_worker(arg, 1);
 169         else if (burst && !fwd_latency)
 170                 return perf_atq_worker_burst(arg, 0);
 171         else if (burst && fwd_latency)
 172                 return perf_atq_worker_burst(arg, 1);
 173
 174         rte_panic("invalid worker\n");
 175 }
 176
 177 static int
 178 perf_atq_launch_lcores(struct evt_test *test, struct evt_options *opt)
 179 {
 180         return perf_launch_lcores(test, opt, worker_wrapper);
 181 }
 182
 183 static int
 184 perf_atq_eventdev_setup(struct evt_test *test, struct evt_options *opt)
 185 {
 186         int ret;
 187         uint8_t queue;
 188
 189         const struct rte_event_dev_config config = {
 190                         .nb_event_queues = atq_nb_event_queues(opt),
 191                         .nb_event_ports = perf_nb_event_ports(opt),
 192                         .nb_events_limit  = 4096,
 193                         .nb_event_queue_flows = opt->nb_flows,
 194                         .nb_event_port_dequeue_depth = 128,
 195                         .nb_event_port_enqueue_depth = 128,
 196         };
 197
 198         ret = rte_event_dev_configure(opt->dev_id, &config);
 199         if (ret) {
 200                 evt_err("failed to configure eventdev %d", opt->dev_id);
 201                 return ret;
 202         }
 203
 204         struct rte_event_queue_conf q_conf = {
 205                         .priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
 206                         .event_queue_cfg = RTE_EVENT_QUEUE_CFG_ALL_TYPES,
 207                         .nb_atomic_flows = opt->nb_flows,
 208                         .nb_atomic_order_sequences = opt->nb_flows,
 209         };
 210         /* queue configurations */
 211         for (queue = 0; queue < atq_nb_event_queues(opt); queue++) {
 212                 ret = rte_event_queue_setup(opt->dev_id, queue, &q_conf);
 213                 if (ret) {
 214                         evt_err("failed to setup queue=%d", queue);
 215                         return ret;
 216                 }
 217         }
 218
 219         ret = perf_event_dev_port_setup(test, opt, 1 /* stride */,
 220                                         atq_nb_event_queues(opt));
 221         if (ret)
 222                 return ret;
 223
 224         ret = rte_event_dev_start(opt->dev_id);
 225         if (ret) {
 226                 evt_err("failed to start eventdev %d", opt->dev_id);
 227                 return ret;
 228         }
 229
 230         return 0;
 231 }
 232
 233 static void
 234 perf_atq_opt_dump(struct evt_options *opt)
 235 {
 236         perf_opt_dump(opt, atq_nb_event_queues(opt));
 237 }
 238
 239 static int
 240 perf_atq_opt_check(struct evt_options *opt)
 241 {
 242         return perf_opt_check(opt, atq_nb_event_queues(opt));
 243 }
 244
 245 static bool
 246 perf_atq_capability_check(struct evt_options *opt)
 247 {
 248         struct rte_event_dev_info dev_info;
 249
 250         rte_event_dev_info_get(opt->dev_id, &dev_info);
 251         if (dev_info.max_event_queues < atq_nb_event_queues(opt) ||
 252                         dev_info.max_event_ports < perf_nb_event_ports(opt)) {
 253                 evt_err("not enough eventdev queues=%d/%d or ports=%d/%d",
 254                         atq_nb_event_queues(opt), dev_info.max_event_queues,
 255                         perf_nb_event_ports(opt), dev_info.max_event_ports);
 256         }
 257         if (!evt_has_all_types_queue(opt->dev_id))
 258                 return false;
 259
 260         return true;
 261 }
 262
 263 static const struct evt_test_ops perf_atq =  {
 264         .cap_check          = perf_atq_capability_check,
 265         .opt_check          = perf_atq_opt_check,
 266         .opt_dump           = perf_atq_opt_dump,
 267         .test_setup         = perf_test_setup,
 268         .mempool_setup      = perf_mempool_setup,
 269         .eventdev_setup     = perf_atq_eventdev_setup,
 270         .launch_lcores      = perf_atq_launch_lcores,
 271         .eventdev_destroy   = perf_eventdev_destroy,
 272         .mempool_destroy    = perf_mempool_destroy,
 273         .test_result        = perf_test_result,
 274         .test_destroy       = perf_test_destroy,
 275 };
 276
 277 EVT_TEST_REGISTER(perf_atq);